Synchronization system and method for substation monitoring backend database, SCD, and RCD

Abstract

The present disclosure provides a synchronization system and method for a substation monitoring backend database, an SCD, and an RCD. The system includes: a synchronization token management unit, an SCD synchronization module, an RCD synchronization module, and a monitoring backend database synchronization module. The synchronization token management unit is configured to send or reclaim modification tokens, only at most one of which can exist at a time, and send a synchronization token.

The invention claimed is: 
     
       1. A synchronization system for a substation monitoring backend database, a substation configuration description (SCD), and a remote configuration description (RCD), comprising: a synchronization token management unit, an SCD synchronization module, an RCD synchronization module, and a monitoring backend database synchronization module;
 the synchronization token management unit being configured to send or reclaim, to or from the SCD synchronization module or the RCD synchronization module or the monitoring backend database synchronization module, modification tokens for initiating modification information, only at most one of the modification tokens existing at a time; wherein the modification token is generated by the synchronization token management unit; 
 the SCD synchronization module or the RCD synchronization module or the monitoring backend database synchronization module being configured to, when data in an SCD file or an RCD file or a monitoring backend database needs to be modified, apply for the modification token to the synchronization token management unit, perform a modification operation and write the modification information into the modification token after acquiring the modification token, and then return the modification token to the synchronization token management unit; and 
 the synchronization token management unit reclaiming the modification token into which the modification information is written, and after the modification token passes verification, writing the modification information into a synchronization token for signal information synchronization triggering of the monitoring backend database, the SCD, and the RCD, and sending the synchronization token to two synchronization modules, which have not applied for the modification token, for synchronous modification of the data. 
 
     
     
       2. The synchronization system for the substation monitoring backend database, the SCD, and the RCD according to  claim 1 , wherein the modification token generated and sent by the synchronization token management unit comprises information of the synchronization module applying for the modification token and information of state in which modification is allowed. 
     
     
       3. The synchronization system for the substation monitoring backend database, the SCD, and the RCD according to  claim 1 , wherein after receiving the synchronization token, the two synchronization modules, which have not applied for a modification token, perform data positioning and modification, and upon completion of the modification, feed back modified information to the synchronization token management unit. 
     
     
       4. The synchronization system for the substation monitoring backend database, the SCD, and the RCD according to  claim 3 , wherein upon completion of receiving the feedback of the modified information, the synchronization token management unit notifies the SCD synchronization module, the RCD synchronization module, and the monitoring backend database synchronization module to perform self check before and after modification and generate difference information of the modification. 
     
     
       5. The synchronization system for the substation monitoring backend database, the SCD, and the RCD according to  claim 4 , wherein in a period from the generation of the modification token by the synchronization token management unit to the completion of receiving the feedback of the modified information, the synchronization token management unit does not generate a new modification token. 
     
     
       6. A synchronization method for a substation monitoring backend database, a substation configuration description (SCD), and a remote configuration description (RCD), wherein the method is based on a synchronization token management unit, an SCD synchronization module, an RCD synchronization module, and a monitoring backend database synchronization module; and the synchronization token management unit is configured to send or reclaim modification tokens, only at most one of which can exist at a time, and send a synchronization token;
 the method comprising the following steps: 
 step S1: applying for, by the SCD synchronization module, the RCD synchronization module, or the monitoring backend database synchronization module, a modification token to the synchronization token management unit; wherein the modification token is generated by the synchronization token management unit; 
 step S2: sending, by the synchronization token management unit, the modification token according to the application when there is no ongoing synchronization task, the modification token comprising information of the synchronization module applying for the modification token and information of state in which modification is allowed; 
 step S3: performing, by the synchronization module applying for the modification token, a modification operation and writing modification information into the modification token after acquiring the modification token, and then returning the modification token to the synchronization token management unit; 
 step S4: reclaiming, by the synchronization token management unit, the modification token into which the modification information is written, and after the modification token passes verification, writing the modification information into the synchronization token, and sending the synchronization token to two synchronization modules which have not applied for the modification token; 
 step S5: performing, by the two synchronization modules which have not applied for a modification token, data positioning and modification after receiving the synchronization token, and upon completion of the modification, feeding back modified information to the synchronization token management unit; and 
 step S6: notifying, by the synchronization token management unit upon completion of receiving the feedback of the modified information, the SCD synchronization module, the RCD synchronization module, and the monitoring backend database synchronization module to perform self check before and after modification and generate difference information of the modification. 
 
     
     
       7. The synchronization method for the substation monitoring backend database, the SCD, and the RCD according to  claim 6 , wherein in step S2, a standard for judging whether the synchronization token management unit has an ongoing synchronization task is: whether it is in a period from the generation of the modification token by the synchronization token management unit to completion of receiving the feedback of the modified information; and if the synchronization token management unit has an ongoing synchronization task, the application for the modification token enters a queuing state until the previous synchronization task has been completed. 
     
     
       8. The synchronization method for the substation monitoring backend database, the SCD, and the RCD according to  claim 6 , wherein when data modification is rolled back: a historical modification token corresponding to a to-be-rolled-back data is retrieved through the synchronization token management unit and then a reverse synchronization operation is performed: the synchronization token management unit sends a synchronization token of reverse operation to the SCD, the RCD, and the monitoring backend database respectively, and generates a rollback operation record.